diff --git a/src/libCom/osi/osiSock.c b/src/libCom/osi/osiSock.c
index 8043751bb..c3a939001 100644
--- a/src/libCom/osi/osiSock.c
+++ b/src/libCom/osi/osiSock.c
@@ -168,14 +168,3 @@ void epicsShareAPI ipAddrToDottedIP
     }
 }
 
-epicsShareFunc void epicsShareAPI epicsEnableInterruptedSystemCall ()
-{
-    epicsSignalInstallSigUrgIgnore ();
-}
-
-epicsShareFunc void epicsShareAPI epicsInterruptSystemCall 
-                                    ( struct epicsThreadOSD * threadId )
-{
-    epicsSignalRaiseSigUrg ( threadId );
-}
-